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https://issues.apache.org/jira/browse/HBASE-17375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15780206#comment-15780206
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Hadoop QA commented on HBASE-17375:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 15s
{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m
0s {color} | {color:green} Patch does not have any anti-patterns. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s
{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s {color} | {color:green} The patch appears to include 1 new or modified test
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m
50s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 34s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 6m
20s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 1m
12s {color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 0s
{color} | {color:blue} Skipped patched modules with no Java source: . {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 0s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 57s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m
48s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 33s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m 33s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 6m
20s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 1m
12s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s {color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
26m 9s {color} | {color:green} Patch does not cause any errors with Hadoop
2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 2.7.3 or 3.0.0-alpha1. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 0s
{color} | {color:blue} Skipped patched modules with no Java source: . {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 0s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 4s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 110m 38s
{color} | {color:green} root in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
19s {color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 167m 21s {color}
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12844735/HBASE_17375_v1.patch |
| JIRA Issue | HBASE-17375 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux 023f276932e9 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2
15:37:11 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | master / 5ffbd4a |
| Default Java | 1.8.0_111 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/5055/testReport/ |
| modules | C: . U: . |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/5055/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> PrefixTreeArrayReversibleScanner#previousRowInternal doesn't work correctly
> ---------------------------------------------------------------------------
>
> Key: HBASE-17375
> URL: https://issues.apache.org/jira/browse/HBASE-17375
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.1.7, 0.98.23, 0.98.24
> Reporter: Chang chen
> Assignee: Chang chen
> Fix For: 2.0.0
>
> Attachments: HBASE_17375_master_v1.patch, row trie example.PNG
>
>
> Recently, we find our hbase compaction thread never end. Assume we have
> following cells:
> {quote}
> <A,a> 1
> <A,v> 1
> <Aaeeee,a> 1
> <Aaeeee,v> 1
> <Abc,a> 1
> <Abc,v> 1
> <Abde,a> 1
> <Abde,v> 1
> {quote}
> If we encode above datas into prefix tree block, then it looks like:
> !row trie example.PNG!
> Assume the current row is {color:red}Abc{color} (e.g. the current row node is
> 4), then the previous row should be *Aaeeee* (e.g. 2). However
> previousRowInternal return {color:red}A{color}(e.g. 1)
> After investigation, I believe it's the bug of
> PrefixTreeArrayReversibleScanner#previousRowInternal.
> {code}
> private boolean previousRowInternal() {
> //...
> while (!beforeFirst) {
> //....
> // what if currentRowNode is nub?
> if (currentRowNode.hasOccurrences()) {// escape clause
> currentRowNode.resetFanIndex();
> return true;// found some values
> }
> }
> {code}
> currentRowNode.hasOccurrences() only test whether it has cell or not. But in
> the case of currentRowNode.isNub() is true, previousRowInternal should
> follow the previous fan instead of return.
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